Translators

In Chapter 18, Stability, we learned about how DTrace computes and reports program stability attributes.
Ideally, we would like to construct our DTrace programs by consuming only Stable
or Evolving interfaces. Unfortunately, when debugging a low-level problem or measuring system performance, you
may need to enable probes that are associated with internal operating system routines
such as functions in the kernel, rather than probes associated with more stable
interfaces such as system calls. The data available at probe locations deep within
the software stack is often a collection of implementation artifacts rather than more
stable data structures such as those associated with the Oracle Solaris system call
interfaces. In order to aid you in writing stable D programs, DTrace provides
a facility to translate implementation artifacts into stable data structures accessible from your D
program statements.